Sliver balling machine and yarn and the like winding machines



A ril 18, 1939. G, FRA ER 2,155,041

SLIVER BALLING MACHINE AND YARN AND THE LIKE WTNDING MACHINES FiledMarch 19, 1958 2 Sheets-Sheet l April 18, 1939. FRASER 2,155,041

SLIVER BALLING MACHINE AND YARN AND THE LIKE WTNDING MACHINES FiledMarch 19, 1938 2 Sheets-Sheet 2 fly UM QMMJSZW Patented Apr. 18, 1939UNITED STATES PATENT OFFICE SLIVER BALLING MACHINE AND YARN assignor toDouglas Fraser & Sons Limited,

Arbroath, Angus, Scotland, a corporation of Great Britain ApplicationMarch 19,

1938, Serial No. 196,821

In Great Britain March 17, 1937 4 Claims.

This invention relates to sliver balling machines, yarn-winding machinesand the like, of the type in which a so-called ball or roll of sliver ora yarn package, hereinafter referred to as the roll, is wound byfrictional contact with a driving friction roller.

In a machine according to the invention the roll is formed between twostationary end plates which shroud only the nip of the driving rollerwith the roll and part of the end surface of the roll.

It is found that, when sliver or yarn being wound is only locallyconfined between two such end plates, a well-formed roll can be builtunder considerable pressure transmitted from the centre.

In the case of a sliver roll the fibre remains bound together, andsustains very considerable pressure without any sign of collapse of thematerial which is external to the confines of the end plates. Theresulting roll has clean square edges throughout its radial depth andmay be delivered very readily from between such end plates, which do notpresent the same frictional resistance as the large-surfaced cheekplates heretofore used.

With the use of such confining end plates in a yarn-winding machine, itis possible largely to avoid cob-webbing, which is apt to causebreakages in the subsequent unwinding processes.

In a practical construction of sliver balling machine according to theinvention the drive is taken from a cork-covered roller. which may beadditional to or may take the place of the usual delivery roller of adrawing framefor bast fibres such as jute, flax or hemp, or othertextile fibre. The roll is built on a boss strung on an arbor havingnon-revoluble trunnions sustained in openended slots presented by acounterweighted bifurcated lever which swings on its pivot during thebuilding of the roll. The requisite pressure for building the roll isapplied by means of a friction band wrapping a drum coaxial with thepivot of the lever and adapted to be released by actuation of a pedaldevice or the like on completion of the roll. Below the positionoccupied by the roll during its formation is an inclined plate or thelike down which the finished roll of sliver rolls when released. In thedescent of the lever, when the roll alights on the inclined plate, thetrunnions vacate the slots and thus free the roll.

A machine according to the invention, is illustrated in the accompanyingdrawings in which Fig. 1 is an end elevation, and Fig. 2 a fragmentaryend elevation drawn to a larger scale.

As shown, I denotes a roll or ball of sliver which has been wound byfrictional contact with a. cork-covered driving friction roller 2, andwhich is only partially shrouded at its ends by two spaced stationaryend plates 3, one only of which is shown, shrouding only the nip of thedriving roller 2 with the roll I and part of the end surface of theroll. The end plates 3 are fixed to the frame of the machine and areparallel to one another, being provided with out-turned end portions 3and with a bridge bar 3 which prevents spreading movement of the plates.The roller 2 shown is additional to the usual delivery roller 2 of adrawing frame for bast fibres. The roll of sliver is built on a. boss 4,preferably of wood, and each of the end plates 3 presents a dependingextension 3 adapted to locate the boss endwise during the building ofthe roll. The boss 4 is strung on an arbor 5 having non-revolubletrunnions 6 received in open-ended slots 1 presented by acounterweighted bifurcated lever 8 which swings downwardly on its pivot9 during the building of the roll. Adjustable pads 8 carried by thelever 8 slide against the outer surfaces of the extensions 13 of the endplates whereby to prevent spreading movement of said extensions.

The requisite pressure for building the roll is supplied by means of afriction band i0 wrapping a drum H which is movable with the lever B andis adapted to be released, on completion of the roll, by elevation of apedal l3 pivoted at I8 and I operable by the foot of the attendant. Arear arm E9 of the pedal carries a stud 2B which is movable in a slot 2iin a lever 22 secured on a rock spindle 38 carrying also a cam 39engaged by a follower 24 on the lower arm 25 of a doub-learmed lever 25,26 pivoted at 27. The upper arm 26 of the lever 25, 26 is operativelyconnected by a pivot 28 with one end of the band 56 which is tensionedby a compression spring 29 acting on the other end of the band it!through the medium of a rod 3!! guided through a hole in a lug 3! on theframe. The spring 29 is strung on the rod and is compressed between anut 32 on the rod and the underside of the lug 3|. A stop-nut 33 on therod is engageable with the lug 3i whereby to limit the movement of therod under the action of the spring 29. In the fully depressed or normalposition of the pedal I3 the pedal is sustained by the engagement of thestud 20 with the outer end of the slot 2|, and the part of the cam 39 ofgreatest radius is engaged by the follower 24, so that the band I0 isheld in frictional engagement with the drum I I under the tensionexercised on the band by the lever 25, 26 in opposition to the action ofthe spring 29. On elevation of the pedal to effect release of the bandII], the stud 20 travels down the slot 2| and the cam is so rotated thatthe lever 25, 26 rocks about its pivot 21 and releases the band. Whenthe pedal is subsequently depressed in order to reapply the pressure atthe commencement of the building of a new roll, the tension applied tothe band III tends to rotate the drum II and therewith the lever 8 inthe direction to move the boss 4 towards the roller 2.

The lever 8 is shown in the position which it occupies at the start of aroll-building operation, the boss 4 being in frictional contact with theroller 2. Sliver I2 passes between the delivery roller 2 and acooperating pressing roller I5, and around the driving roller 2, beforeentering the nip of the roller 2 with the boss 4 or with the roll ofsliver being built. When it is required to produce a cross-wound roll, areciprocatory sliver guide is introduced between the rollers 2 and 2. Aswill be understood, as the sliver roll builds upon the boss 4 the lever8 rocks downwardly about its pivot 9 in opposition to the resistance ofthe friction band I0 and the action of the counterweight 8 of the lever.When the roll attains finished diameter as indicated at I, thecounterweight 8 contacts with an adjustable screw 34 on a lever securedon a shaft 36, whereby the shaft 36 is rocked and set off motionactuated to stop the machine. When now, the band ID is released byelevation of the pedal IS, the lever B may be manually depressedslightly by actuation of a handle [I thereon, until the completed rollalights on an inclined plate It. Further depression of the lever 8causes the trunnions 6 to vacate the slots 1, and, as the trunnions 6come into contact with sloping upper boundaries I of the slots, thetrunnions are forced clear of the slots and the roll of sliver rollsdown the plate I 4 and is thus ejected.

After release of the roll, and. providing that the pedal I3 is notdepressed, the lever B swings upwardly to starting position under theaction of its counterweight 8 When, now, the pedal I3 is depressed, theband I0 re-engages the drum I I and thus brakes the lever B for asubsequent rollforming operation.

The lever 8 is provided with rubber pads 31 which, by rubbing on the endfaces of the boss 4, prevent stray fibres from being caught and woundaround the trunnions 6.

I claim:

1. In a machine for balling sliver, the combination with a bifurcatedlever comprising laterally spaced arms each formed with an open-endedbayonet slot, a boss on which the sliver ball is to be wound, an arborpenetrating said boss and having trunnions fitted in said slots, arotary driving roller adapted to frictionally engage the sliver ballbeing wound, vertically immovable plates embraced by said arms and clearof said slots, said plates formed and positioned to shroud the nip ofsaid driving roller with the sliver ball and part only of the end facesof the sliver ball,

and a landing surface to receive the finished sliver ball on depressionof the free ends of said arms and by upward reaction on the sliver ballto dislodge said trunnions from said slots.

2. In a machine for balling sliver, the combination with a bifurcatedlever comprising laterally spaced arms each formed with an openendedbayonet slot, a boss on which the sliver ball is to be wound, an arborpenetrating said boss and having trunnions fitted in said slots, arotary driving roller adapted to frictionally enage the sliver ballbeing wound, vertically immovable plates embraced by said arms and clearof said slots, said plates formed and positioned to shroud the nip ofsaid driving roller with the sliver ball and part only of the end facesof the sliver ball, a landing surface to receive the finished sliverball, and manually operable means effective to bring about depression ofthe free ends of said arms whereby to effect the landing of the sliverball on said surface and disengagement of said trunnions from saidslots.

3. In a machine for balling sliver, the combination with a bifurcatedpivoted lever comprising laterally spaced arms, a boss on which thesliver ball is to be wound, an arbor penetrating said boss and havingtrunnions normally engaging said arms, a rotary driving roller disposedabove said boss and adapted to frictionally engage the sliver ball beingWound, vertically immovable plates embraced by said arms, said platesformed and positioned to shroud the nip of said driving roller with thesliver ball and part only of the end faces of the sliver ball, padscarried by said levers and engaging the outer faces of said end plates,a drum coaxial with the pivot of said lever and moving with said lever,a friction band wrapping said drum, a pedal operable to maintain saidband in frictionable engagement with said drum, connections between saidpedal and said band whereby the initial depression of said pedaltensions said band and thereby rocks said lever in the direction to movesaid boss towards said driving roller, and means whereby on elevation ofsaid pedal said trunnions are disengaged from the lever arms.

4. In a machine for balling sliver, the c0mbi-- nation with a bifurcatedlever comprising laterally spaced arms each formed with an open-endedbayonet slot, a boss on which the sliver ball is to be wound, an arborpenetrating said boss and having trunnions fitted in said slots, arotary driving roller adapted to frictionally engage the sliver ballbeing wound, vertically immovable plates embraced by said arms, saidplates formed and positioned to shroud the nip of said driving rollerwith the sliver ball and part only of the end faces of the sliver ball,means for depressing manually the free ends of said arms, a device forbraking the rocking movement of said lever in the direction away fromsaid driving roller, and footoperated means to apply said brake and urgesaid lever in the direction towards said driving roller.

GORDON SCOTT FRASER.

